white filmy substance

I have a white creamy film(look and feels like plaque) that grows on the inside of my mouth (both sides) According to web md, it sounds like I have oral thrush(candidas). My primary care physician treated it with Diflucan to no avail and then with nystatin, again to no avail. I then went on to see the ear,nose and throat specialist. He stuck a scope up my nostrils and stated that I did not have oral thrush. He stated that I was dehydrated??? He then prescribed me 30mg of evoxac for 90 days.
I am on day Two with the med and I see no improvement. What may you think this could be?

[Jerome Tsang, DDS]

A tell-tale sign of thrush is to be able to wipe off the white layer.  If it doesn't white off, its most likely not thrush and something else.  Have you considered going to a dentist or an oral surgeon to get a biopsy of the tissue to see what it may be under a microscope?  You might want to look into that.

[scottma]

Bilateral, symmetric, asymptomatic oral lesions are commonly associated with developmental or congenital  etiology.Seeing an oral pathologist or oral medicine specialist is advised.